 | | Report (issue) | | RADIOACTIVE DEPOSITS IN THE LOWER YUKONKUSKOKWIM REGION, ALASKA, 1952 This report concerns work done on...RADIOACTIVE DEPOSITS IN THE LOWER YUKONKUSKOKWIM REGION, ALASKA, 1952 By Walter S. West CONTENTS Page...In pocket Index map of the lower Yukon-Kuskokwim region showing areas mapped, Alaska............. 3 Topographic...ABSTRACT Reconnaissance in the lower Yukon-Kuskokwim region during 1952 consisted of an examination for radioactivity...of metazeunerite was found in a sample from the ore dump of this same tunnel. No other occurrences of |  | | Report (issue) | | conclusions................. Koyukuk-Chandalar region, by Arthur E. Nelson... Geology and radioactivity...Table 1. Radioactivity and mineralogy of rock and ore samples collected in the Slana-Nabesna district,...Range, 1952..... 3. Radioactivity data on rock and ore samples collected in the Chisana district..........Koyukuk-Chandalar region, Alaska............................... 11. Radioactivity of rock and ore samples from...from the Koyukuk-Chandalar region, Alaska................. ABSTRACT Reconnaissance for radioactive deposits |  | | Journal (issue) | | attraction. Photo courtesy of Peter Megaw. Introduction ore mining at the Ojuela ceased in the mid-1940’s, but...respective heydays, exploiting hydrothermal polymetallic ore deposits. The Tsumeb deposit, however, is geologically...has done so only during the last 60 years, after ore mining had largely come to an end (we almost dare...specimens the miners probably encountered and crushed as ore or discarded as waste during those 340+ years). Both...fluorite, celestine, apatite, and magnetite iron ore, have produced few noteworthy specimens. But the |  | Verhaert, Michèle, Gautheron, Cécile, Dekoninck, Augustin, Vennemann, Torsten, Pinna-Jamme, Rosella, Mouttaqi, Abdellah, Yans, Johan (2022) Unravelling the Temporal and Chemical Evolution of a Mineralizing Fluid in Karst-Hosted Deposits: A Record from Goethite in the High Atlas Foreland (Morocco) Minerals, 12 (9) 1151 doi:10.3390/min12091151 | Journal (article/letter/editorial) | | Fluid in Karst-Hosted Deposits: A Record from Goethite in the High Atlas Foreland (Morocco) Michèle Verhaert...Fluid in Karst-Hosted Deposits: A Record from Goethite in the High Atlas Foreland (Morocco). Minerals...dekoninck@unamur.be Abstract: Timing and duration of ore deposit formation are crucial to understanding the...geochemical and H- and O-isotope compositions of pure goethite formed in the Imini karst-hosted Mn district (High...fracture-filling goethite are identified, and both precipitated prior to the massive Mn oxide ore. The δD and |  | | Book | | of debris washed down fromthe Roughton Gill mine dumps under Iron Crag C O N T E N INTRODUCTION...Elizabeth I to work copper and silver there. The smelter they built at Keswick was the largest in Europe...contributions on the topographical mineralogy of the region updating the earlier work of Greg & Lettsom (1858);...elsewhere in the Lake District, where the dominant ore minerals are sulphides of lead, copper and zinc,...: hemimorphite : caledonte : : matinedleite : goethite : ”psilomelane' + limonite' and many other species |  | | Journal (issue) | | Ueber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...genetic relationship to diamond and may vary from one region to another. The accessory minerals are well known...groundwater levels. (c) Overburden. Deposits overlying the ore gravels can be even thicker. This overburden is typically...diving gear which they will take turns using. The ore grade is always low, ranging from 1 carat per cubic...of gravel. The gem percentage varies from region to region, but generally 20% to 40% of the diamonds |  | | Journal (issue) | | commercial iron ore. and the rock outcrops expose many inThe first mining of iron ore in the teresting...1848; the Minerals are beautiful in themselves, ore was hauled by team to a forge near but when their...may be only a stone to some, but it to smelt iron ore near the mines ; even is an open book to you. Every...simply happen; the to the efforts of the early iron-ore deveunderlying causes of their formation ace lopers...oldest rocks known. Many of these Lake Superior region and the furnaces were originally gravels, sands |  | | Journal (issue) | | available). Arizona being the remarkably mineral-rich region that it is, we have not yet come close to describing...yielded hundreds of tons of wulfenite crystals as ore. And yet it is probably among the least visited by...recounted by Dowell (1978a, 1978b). The Total Wreck ore deposit was discovered in 1878 by John T. Dillon...levels, and miners began hauling out 50 tons of ore per day, which at first was stockpiled on the dump...mine opening to the mill, and a mule-drawn 5-ton ore car was brought in. In 1882 a massive steam-powered |  | | Report (issue) | | similarities in their geologic characteristics (ore and gangue mineralogy, major- and trace-element geochemistry...lithology, wall-rock alteration, physical aspects of ore, etc.), as well as their geologic setting (see for...to have potential for economic exploitation. An "ore deposit" is a mineral deposit that has been tested...Jambor and Blowes (1994), and Plumlee (in press). Ore and gangue mineralogy, host rock lithology, and wall-rock...minerals, carbonate minerals, whether present in ore or in host rocks, can help consume acid generated |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...Windisch 30 Van Wouw Street Groenkloof, Pretoria West Germany Christian Weise Verlag Oberanger 6 D-8000 Munchen...Austria, OS 624; in Switzerland, SFr 76.80; in Germany, DM 76.80). Send to: Magma, Verlag Rainer Bode...Bode, Krokusweg 13, D-4630 Bochum 7, West Germany. For those readers of Magma and of the Mineralogical Record...percent or the total amount in the ore. It looked like a very fair ore and they said it ran about 7 ounces |  | | Journal (issue) | | written in 1910-1911 by Friedrich Schumacher on the ore deposits owned by “Ruda-12 Apostoli” company, a mineral...educated in Germany. The collection has been added with new gold specimens from the ore deposits around...between 1920 and 1948. Other mineral samples from ore deposits of Romania or from all around the world...383 mineral samples, 53 rock samples, as well as ore processing reagents, mining models, mining devices...belonged to mining companies based in the Brad region. Today, it is owned by S.C. “MINVEST” S.A. Deva |  | Verhaert, Michèle, Bernard, Alain, Dekoninck, Augustin, Lafforgue, Ludovic, Saddiqi, Omar, Yans, Johan (2017) Mineralogical and geochemical characterization of supergene Cu–Pb–Zn–V ores in the Oriental High Atlas, Morocco. Mineralium Deposita, 52 (7) 1049-1068 doi:10.1007/s00126-017-0753-5 | Journal (article/letter/editorial) | | Accepted: 16 June 2017 # Springer-Verlag GmbH Germany 2017 Abstract In the Moroccan High Atlas, two...protolith, related to variations in the mineralogy and ore grades and probably caused by varying Eh-pH conditions...Keywords Moroccan High Atlas . Weathering . Supergene ore deposits . Calamine . Non-sulfide Cu–Pb–Zn–V minerals...the Moroccan High Atlas, numerous Pb–Zn supergene ore deposits described in the 1960–1970s (Emberger 1969...relationships between different types of ore, and between ore and host rocks, results in the identification |  | | Journal (article/letter/editorial) | | oregeorev.2014.11.018 OREGEO 1393 To appear in: Ore Geology Reviews Received date: Revised date: Accepted...in Egypt: Does the future get worse or better?, Ore Geology Reviews (2014), doi: 10.1016/j.oregeorev...targets including wall-rock alteration, listwaenite, dumps and tailings of ancient mines, byproduct gold hosted...pentlandite minerals. Characterizing gold in an ore is important in extraction metallurgy. Free-milling...oxidation; all oxidize the refractory minerals in the ore to render the gold amenable to cyanidation. Whilst |  | Sun, Jing, Strosnider, William H.J., Nairn, Robert W., LaBar, Julie A. (2020) Water quality impacts of in-stream mine tailings on a headwater tributary of the Rio Pilcomayo, Potosí, Bolivia. Applied Geochemistry, 113. 104464 doi:10.1016/j.apgeochem.2019.104464 | Journal (article/letter/editorial) | | of minerals such as gibbsite, melanterite, 34 goethite, calcite and dolomite. In general, the reactivity...Hemisphere (World Bank, 2009). Communities in 75 the region rely on the river for washing, irrigation, fishing...through ore dumps and tailing piles, point-source tailing discharges from Potosí’s 85 ingenios (ore processing...calcium oxide (CaO) is commonly 243 used in the ore separation process in Potosí, leading to tailings...292 city). 293 3.3 Speciation 294 The study region consists of Upper Cretaceous and Tertiary bedrocks |  | | Report (issue) | | investigations .................. Lower Yukon-Kuskokwim region, by W. S. West ........................ Russian...Southern Kaiyuh Mountains ........ Koyukuk-Chandalar region, by A. E. Nelson ........................ Chandalar...Yukon-Kuskokwim region................. data on localities examined in the Koyukuk-Chandalar region ...........centered chiefly in parts of the lower Yukon-Kuskokwim region and northeastern, east-central, south-central,...lodes were discovered in the Koyukuk-Chandalar region, nor was the source of the monazite, previously |  | | Report (issue) | | mine . . . . . . . . .11 Maria magnetite-copper ore body . . . . . . . .11 Wah Wah Mountains deposits... . . . 34 Ore deposits . . . . . . . . . . . . . . . . . . . . . . . . . . 39 A and B ore body . . ..... . 41 April Fool ore body . . . . . . . . . . . . . . . . . . . 41 Armstrong ore body . . . . . . .... . . 41 Ashton ore body . . . . . . . . . . . . . . . . . . . . . . 41 Black Hawk ore body . . . . ..... . 41 Black Magnetic ore body . . . . . . . . . . . . . . . 44 Blackbird ore body . . . . . . . . . |  | | Report (issue) | | form of deposits____________________ 66 Types of ore 66 Mineral composition.. __ ____ ______________ '...City______________________ 105 Beneflciation of iron ore _______________________ 107 Production ________________________...____________________________ 110 Reserves of iron ore _ _ _______________ 110 m ILLUSTRATIONS Page ...Highland Rim area of Tennessee showing location of iron-ore deposits, mines, quarries, and blast furnaces5. A...overlying yellowish sand in Van Leer brown iron ore mine, near Iron City, Tenn________ 6. A, Stack of |  | | Report (issue) | | Maritime Plain, a lowland within the Appalachian region, that includes Prince Edward Island and adjacent...They were formed in Mississippian time when the region was invaded by seas that laid down layers of limestone...glacial ice. With the retreat of the glaciers, the region was uplifted, but the islands failed to reach their...sandstone that underlies the surrounding low-lying region. The road log continues straight ahead. 3.2 Butte...in volcanic rocks associated with the manganese ore. Cavities in the limestone are common; they are lined |  | | Journal (issue) | | 3: Pseudo-octahedral crystals of bernalite on goethite from the Propri etary Mine, Broken Hill, New...Broken Hill, bernalite has also been found in Germany, but to date it has not been made synthetically...the silicate minerals of the Earth's mantle, a region which constitutes 60% of the volume of the planet... Namibia; the Clara Mine in the Black Forest, Germany; Broken Hill, New South Wales, and Langban, Sweden...mining around the turn of the century, and the mine dumps have continued to provide interesting specimens |  | | Report (issue) | | significant prospects3 were plotted and their respective dumps were mapped. Based on this information and previous...Geologic relations and isotopic dating indicate that ore mineralization, hydrothermal brecciation, and pervasive...amorphous iron hydroxides with minor amounts of goethite. An iron precipitate mound at an acidic spring...major amounts of X-ray amorphous iron hydroxide, goethite, and jarosite. An X-ray amorphous aluminum hydroxide...just below site PI 2 (Fig. 2). Mining and Ore-Related Minerals Ore minerals present within the major mines |  | | Report (issue) | | cpidotc, crythritc, fluorite, galena, garnet, goethite, gold, graphite, gypsum, halloysitc, hematite...fergusonite, fluorapatitc, fluorite, gahnitc, galena, goethite, gold, golden beryl, graphite, gvpsum, hatchettolite...chalcosiderite, chlori toid, cryptomclane, epidote, goethite, gypsum, halite, hematite, iddingsite, ilmenite...chalcopyritc, dioctohcdral vermiculitc, galena, gibbsitc, goethite, gold, hematite, magnetite, malachite, olivine...corundum, enstatite, epidote, feldspar, garnet, goethite, golden beryl, hematite, hyacinth, hydrobiotite |  | | Journal (issue) | | G. Ryback 51 Troilite from Glenelg, Highland Region, Scotland: the first British Isles occurrence....polydymite, unless one appreciates that it is a rare ore of nickel. Similarly, if one found a specimen of...old mining terms as 'iron-glance' and 'green lead ore' are listed. The Handbook of Mineralogy series gives...minerals found in rocks and gives scant attention to ore and vein minerals. For a more rounded approach one...' S Cleuch should be under Dumfries &. Galloway Region . p.91, RH col. , line 2 from bottom , & p.92, |  | | Report (issue) | | .............................. East Kimberley region .................................................~inc-lead-copperprospects CHAPTER 14 EASTERN BORDER REGION CRYSTALLINE T E R R A I N S ix 109 109 I10 111...112 113 113 113 115 CHAPTER 15 THE BLACKSTONE REGION: BENTLEY SUPERGROUP Geology .....................000 2 Generalized geological map of the Kimberley region showing tectonic provinces, cupriferous stra- ...51 52 53 54 TABLES 1 Annual production of copper ore and concentrates Western Australia 1853-1976 ... |  | | Book | | .·····-······---········-················· 19 Goethite (Limouite) ···········-······················...with other iron formations of the Lake Superior region .............................. 64-66 54 54-59.............................. 89-94 Comparison of Ore and the Taconite f1·om which it ,vas derived ......Correlation of Taconite Horizons ,vith types of ore .............. 99-101 Density, Texture ancl Structure...Position of Ore Bodies in the Iron-Bearing Formation ........106-107 Local Structu1·es of the Ore Bodies. |  | | Book (edition) | | Daliranite, 5111111, Zarshouran Au-As deposit, Takab region, Iran Grandviewite, 5 111111, Capillitas deposit...Anthropogenic on burning coal dumps of the Anna mine, near Aachen. Germany. CM 51, 57-66, 2013. Afmite...In acic~- depo it, N of ofija, Vratsa-Izdremet ore region, Bullar crystals to I mm, pale yellow, transparent...meteorite impact crater, N of Nordlingen, Bavaria, Germany. AM 95, 892-895, 2010. Aklimaitc CaJ(OH) 4 JSi2Os(OH)2]·5H...the Alcaparrosa mine, Cerritos Bayos, Antofagasta region, Chile. MM 76, 851861, 2012. Aldrigeite (Cd,Ca)(Cu |
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